Analysis And Study Of Restricted Expansion Of N0.1 Unit Of Zhangjiakou Power Plant

The problem of the cylinder expanding and constricting abnormally of the No.1 turbine unit in Zhang Jia Kou Power Plant is analyzed in this paper.According to the performance, the cylinder's expansion displacement measurement and measurement of stress-stain of the main pipes connected to cylinder are researched, and the stress-strain of main pipes at design and practical arrangement conditions are specially calculated.After studying the result of testing and calculating, the reconstructed method is proposed and put into practice, and good effects are showed.In the starting and stopping process, the problems of the serious abnormal expanding and constricting of the cylinder is dealt with, and the axis seal's steam leak, axis system's fluctuation and so on are resolved.The safe-operating of the turbine, therefore, is guaranteed and conspicuous business efficiency and communal efficiency are achieved.Feng Huimin(power engineering) Directed by prof.Han Zhong he, Tian Song feng senior engineer Li Xinpeng...